﻿using Apewer;
using Apewer.Internals;
using System;
using System.Collections.Generic;
using System.Text;

namespace Apewer
{

    /// <summary></summary>
    public class Configuration
    {

        private static Json _json = null;
        private static bool _loaded = false;

        private static Json JsonFile
        {
            get
            {
                if (!_loaded) Load();
                return _json ?? Json.NewObject();
            }
        }

        private static string GetPath()
        {
            if (StorageUtility.FileExists("config.json"))
            {
                return "config.json";
            }

            if (StorageUtility.FileExists("configuration.json"))
            {
                return "configuration.json";
            }

            try
            {
                var type = typeof(Configuration);
                var path = System.IO.Path.GetDirectoryName(type.Assembly.CodeBase);
                if (path.StartsWith("file:\\") && path.Length > 6) path = path.Substring(6);

                var ad_config = path + "\\..\\app_data\\config.json";
                if (StorageUtility.FileExists(ad_config)) return ad_config;

                var ad_configuration = path + "\\..\\app_data\\configuration.json";
                if (StorageUtility.FileExists(ad_configuration)) return ad_configuration;

                var wr_config = path + "\\..\\config.json";
                if (StorageUtility.FileExists(ad_config)) return wr_config;

                var wr_configuration = path + "\\..\\configuration.json";
                if (StorageUtility.FileExists(ad_configuration)) return ad_configuration;
            }
            catch { }

            return null;
        }

        /// <summary>从默认路径加载配置文件，默认文件名为 config.json 和 configuration.json。</summary>
        public static bool Load()
        {
            var path = GetPath();

            if (path != null && StorageUtility.FileExists(path))
            {
                var text = TextUtility.FromBytes(StorageUtility.ReadFile(path, true));
                var loaded = Load(text);
                if (loaded) return true;
            }
            return false;
        }

        /// <summary>加载配置文件。</summary>
        public static bool Load(string json)
        {
            var text = json;
            _json = Json.From(text);
            return _json != null;
        }

        /// <summary>获取配置文件中的属性。</summary>
        public static Json GetProperties(Type type)
        {
            if (type == null) return null;

            var result = GetProperties((string)type.FullName);
            return result;
        }

        /// <summary>获取配置文件中的属性。</summary>
        public static Json GetProperties(string type)
        {
            if (TextUtility.IsBlank(type)) return null;
            var config = JsonFile;
            if (config == null) return null;
            return config.GetProperty(type);
        }

    }

}
